document.write( "Question 362918: Please help me solve this problem by the elimination method. I am having a lot of trouble understanding how to solve for y after I solve for x. And I have a problem solving for x when a fraction is involved as is in this problem. \r
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document.write( "0.3x - 0.2y=4
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document.write( "0.4x - 0.5y=-55/17\r
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document.write( "I understand that the first equation will be 0.3x = 4, and the second will be 0.4x=-55/17;
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document.write( "Don't know what to do after this. I do not get the elimination method.
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document.write( "Thank you. \n" );
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Algebra.Com's Answer #258783 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! 1. \n" ); document.write( "2. \n" ); document.write( "If you don't like fractions or decimals, get rid of them by multiplying. \n" ); document.write( "Multiply both equations by 10 to get rid of decimals. \n" ); document.write( "1. \n" ); document.write( "2. \n" ); document.write( "Now multiply the second equation by 17 to get rid of the fraction. \n" ); document.write( "2. \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "OK now you have 2 equations and you want to get rid of one variable. \n" ); document.write( "1. \n" ); document.write( "2. \n" ); document.write( "If you multiply the first equation by 85 and the second equation by (-2) and add them, you can eliminate \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Now that you have \n" ); document.write( "Both equations will work. \n" ); document.write( "1. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |